Income Taxes: - Income Tax Expenses and Deferred Tax Assets (Details) - USD ($)	2 Months Ended	10 Months Ended	12 Months Ended
	Feb. 28, 2018	Dec. 31, 2017	Feb. 28, 2018	Feb. 28, 2017
Income Taxes:
Decrease in valuation allowance			$ (112,401)
U.S. federal income tax rate (as a percent)	21.00%	34.00%
Actual income tax benefit
Expected benefit			(338,541)	$ (511,604)
Effect of expenses deducted directly by Dr. Burzynski			338,541	511,604
Other adjustments			(60,630)	23,128
Change in valuation allowance			60,630	(23,128)
Deferred tax assets:
Net operating loss carryforwards	$ 138,969		138,969	199,599
Alternative minimum tax credit carryforwards	42,603		42,603	42,603
Total deferred tax assets	181,572		181,572	242,202
Less valuation allowance	$ (181,572)		(181,572)	(242,202)
Historical earnings			$ 0	$ 0